摘要:
The invention provides a device for measuring characteristic quantities of an at least partially transparent sample, comprising: an illumination component including a light source (1) which emits light in a predetermined wavelength range and which is arranged such within this illumination component that the light substantially propagates along a predetermined optical axis, a sample reception space provided between this illumination component and a measuring component and arranged such with respect to this optical axis that the light which emerges from the light source first passes a sample located within that sample reception space and then enters this measuring means, a measuring component including a substantially closed measuring space having an opening through which this optical axis extends and through which the light enters after having passed the sample, and which also includes a photodetector component (2) being sensitive at least within this predetermined wavelength range, including at least two detectors, namely a first detector (4) arranged in the optical axis (3) of the illumination component and a second detector (5) arranged in a predetermined radial distance from this optical axis.
摘要:
Radiation is irradiated by an irradiation device at a pre-set angle of incidence with respect to the surface onto the surface to be investigated, and the radiation scattered and/or reflected by this surface arrives at a radiation detector device arranged at a pre-set detection angle with respect to the surface and having an image-recording unit which records black-and-white images, wherein this radiation detector device permits a spatially resolved detection of the radiation reaching it. The irradiation device directs radiation in a first wavelength range onto the surface and the image-recording unit records a first spatially resolved image of this radiation scattered and/or reflected from the surface and the irradiation device directs radiation in a second wavelength range onto the surface and the image-recording unit records a second spatially resolved image of this radiation scattered and/or reflected from the surface.
摘要:
A lanyard plug includes a head having a “T” shaped cross section with a top portion supported by a beam portion. The head is adapted to be retentively coupled in a groove of a device. A body is coupled to the beam portion of the head. A spring loaded pin is supported in a cavity of the body and extends through the top portion of the head.
摘要:
Endoscopic arrangement comprising a first distal end, an imaging device arranged at the first distal end, a first proximal end for connection to a supply unit, a data transmission element embodied as a light guide and having a second distal end and a second proximal end, and comprising an electro-optical converter, wherein the electro-optical converter is configured to convert digital data generated by the imaging device into an optical signal, wherein the data transmission element at its second distal end is optically coupled to the electro-optical converter for coupling the optical signal into the data transmission element, wherein the imaging device comprises at least two data outputs each having a digital output signal, and wherein a first signal converter is provided between the imaging device and the electro-optical converter for combining the digital output signals into a digital combined output signal.
摘要:
An apparatus for measuring optical properties of transparent materials with a first illumination device which illuminates the material to be investigated along a pre-set illumination path with a pre-set radiation, with a radiation recording space which records radiation passed on by the material to be investigated. The radiation recording space is arranged so that radiation emitted by the first illumination device first strikes the material and then at least for a time an inner wall of the radiation recording space. A radiation detector device is arranged to record radiation reflected and/or scattered essentially only from the inner wall. A second illumination device suitable for emitting modulated radiation also illuminates the inner wall.
摘要:
A method for optical investigation of textured surfaces involves the steps of irradiation of radiation onto the surface to be investigated; reception of an image from at least part of the radiation irradiated onto the surface and reflected by the surface; location-resolved evaluation of the image recorded and determination of at least one value K which is characteristic of this image. A parameter G which is characteristic of the surface is determined while using the characteristic value K and while using at least one further property E known beforehand or determined of the surface.
摘要:
Endoscopic arrangement comprising a first distal end, an imaging device arranged at the first distal end, a first proximal end for connection to a supply unit, a data transmission element embodied as a light guide and having a second distal end and a second proximal end, and comprising an electro-optical converter, wherein the electro-optical converter is configured to convert digital data generated by the imaging device into an optical signal, wherein the data transmission element at its second distal end is optically coupled to the electro-optical converter for coupling the optical signal into the data transmission element, wherein the imaging device comprises at least two data outputs each having a digital output signal, and wherein a first signal converter is provided between the imaging device and the electro-optical converter for combining the digital output signals into a digital combined output signal.
摘要:
The invention relates to flame resistant polycarbonate plates characterised in that the flame-proof properties thereof are maintained even after long exposure to weathering.
摘要:
A colour measuring unit (1) comprising a radiation device (2) which emits light onto a surface (9) to be examined, wherein the radiation device (2) comprises at least one semiconductor-based light source (6), and a radiation detector device (12) which receives at least a portion of the light scattered by the surface and outputs a signal characteristic of this light, wherein the radiation detector device (12) allows a spectral analysis of the light impinging thereon. According to the invention, the colour measuring unit comprises at least one sensor device (10) which determines at least one electrical parameter of the light source (6), and also a processor device (14) which outputs from this measured parameter at least one value characteristic of the light emitted by the radiation device (2).
摘要:
The invention relates to a portable device (1) for the determination of surface properties with a measurement apparatus (10) which directly determines locally the topography of a surface (8) under investigation and issues at least one measured value that is characteristic of this local topography, and with a processor apparatus which, taking account of a multiplicity of initial measured values, issues at least one result value characteristic of the global topography of the surface.